Steam-trap.



C. 1. KTCHEM.

STEAM TRAP.

APPLxcAUoH Elu-:D APR. :9, 1911.

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When water condenses in the radiator, it will lind its common level inthe condensing chamber until it reaches a point somewhat above thedotted line 2-2 of Fig. 1, but will then raise the lioat 11 and sleevevalve 1:2 causing the latter to uncover drain ports 14. vIn this way,whenever the level of the water in the condensing chamber slightlyexceeds the altitude of the ports 14, said ports will be opened and thecondensing chamber will be drained down to the level of the said ports,but not lower, because the float in the sleeve valve 12 immediatelylowers and causes the same to inclose the said ports 14 and, moveover,the said condensing chamber cannot possibly be drained into the returnpipe lower than the said ports. The only way that the condensing chambercan be drained to a point below ports 14 is for the water to run backfrom the radiator through the steam supply pipe.

When the float and sleeve valve are raised, the upper end of the latterwill close more or less of the air ports 15, thereby either cutting offor decreasing the action of the partial vacuum in drawing steam intotheradiator.

Overlying the delivery end of the pipe 7 is an inverted U-shapeddeflecting plate 18 which is secured to the lower head 4. Thisdeflecting plate prevents steam, when the condensing chamber is dry,from striking directly against the float and when water is in thecondensing chamber, prevents the direct upward flow of water against thesaid ioat so that the action of the float is not influenced by theimpact of incoming steam or of inflowing water.

The transparent walls of the condensing chamber permit the action of thefloat and controlling valve and the altitude of water` in the condensingchamber, readily to be observed; but in some forms of the device it maybe further advisable to substitute a metallic or other opaque shell inlieu of the glass cylinder 3.

What I claim is:

1. In a device of the kind described, the combination with a condensingchamber having two pipe connections, one for connecting to. a radiator,and the other serving as a return tube, of a tubular stem extending fromsaid return pipe upward into said condensing chamber and provided withupper and lower lateral ports, a sleeve valve working on said tubularstem and normally closing the lower ports thereof, a ioat connected tosaid sleeve valve, and serving when raised to cause said sleeve valve toopenv said lower ports, and a choke valve in the upper end of saidtubular stem for opening and closing the upper ports of said stem.

2. In a device of the kind described, the combination with a condensingchamber having two pipe connections, one for cpunecting to a radiator,and the other serving as a return tube, both of said pipes openingthrough the bottom of said chamber, of a tubular stem extending fromsaid return pipe upward into said condensing chamber and provided withupper and lower lateral ports, a sleeve valvefworking on said tubularstem and normally closing the lower ports thereof, a float connected tosaid sleeve valve, and serving when raised to cause said sleeve valve t0open said lower ports, the ports in the upper portion of said tubularstem being longitudinally spaced, and a choke valve working in the upperend of said tubular stem and adjustable to open or close more or less ofthe said upper ports.

3. In a device of the kind described, the combination with a condensingchamber having two pipe connections, one for connecting to a radiator,and the other serving asa return tube, both of said pipes openingthrough the bottom of said chamber, of a tubular stem extending fromsaid returnY pipe upward into said condensing chamber and provided withupper and lower lateral ports, a sleeve valve working on said tubularstem and normally closing the lower ports thereof, a float connected tosaidA sleevevalve, and serving when raised to cause saidk sleeve valveto open said lower ports, the ports in the upper portion of said tubularstem being longitudinally spaced, and a choke valve working in the upperend of said tubular stem and adjustable to open or close more or less ofthe said upper ports, the said choke valve having threaded engagementwith saidtubular stem and having a linger piece exposed at the exteriorof said condensing chamber.

4. In a device of the kind described, the combination with a condensingchamberv having two pipe connections, one for connecting to a radiator,and the other serving as a return tube, both of said pipes openingthrough the bottom of said chamber, of a tubular stem extending fromsaid return pipe upward into said condensing chamber and provided withupper and lower lateral ports, a sleeve valve workingon said tubularstem and normally closing lthe lower ports thereof, a ioat connected tosaid sleeve valve, and serving when raised to cause said sleeve valve toopen said lower ports, the ports in the upper portion of said tubularstem being longitudinally spaced, and a' choke valve working in theupper end of said tubular stein and adjustable to open or close more orless of the said upper ports, the said sleeve valve when raised servingto close more or less of the said upper ports.

5. In a device of the kind described, the combination with a condensingchamber having two pipe connections, one for connecting to a radiator,and the other serving as a return tube, both of said pipes opening saidcondensing chamber comprising upper through the bottom of said chamber,of a and lower metallic heads and an interposed tubular 'stem extendingfrom said return glass tube.

pipe upward into said condensing chamber In testimony whereof I aii'ixmy signature 5 and provided with upper :md lower lateral in presence oftwo witnesses.

ports, a sleeve valve working on said tubular r 1 w stein and normallyclosing the lower ports CHARLES J' BA1 (JHEM' thereof, and 1 floatconnected to said sleeve Witnesses: valve, and serving when raised tocause said I. BoRovsKY, 10 sleeve valve to open said lower ports, the F.D. MERCHANT.

Copies of this patent may be obtained for ve cents each, by addressingthe Gommissioner of Patents, Washington, D. C.

